zwoboda



Dern 26, 1922.

FILED FEBy MWTP# .MWLI

5mm/nto@ a all AUGUST ZWOBODA, F NEW YORK, N. Y.

PRINTING PRESS.

Application filed February 24, 1921.

To (/,ZZ 1li/"rom may concern.'

Serial No. 447,442.

taken in the plane ot the line lI--ll of Be it known that l, AUGUsr ZWonoDl-r, aa Fig. 1.

citizen oit the United States, and resident ot the borough ot Bronx, in the city and State oit New York, have invented a new and use- .'t'ul improvement in Printing Presses, ot which the following is a specification.

This invention relates to that class of printing presses in which the printing plates traveling; in an elongated path, said carrier being arranged to bring successive printing :forms into engagement with their respective impression suriaces with a rolling contact, said invention being` suitable tor use either in. connection with direct or transfer printing mechanisms.

The object of my invention is to provide certain improvements in the construction, form, arrangement and operation of the several parts ot both the printing,` and thei inlring 1 echanisms, vhereby all lost motion in the drive ol: said mechanisms is eliminated; in which the mechanismsl are capable of great speed vand are Well adapterh with slight changes., ifor single or multi-color Work6 and byineans oi' which a completed picture in perfect register ot' any ninnber ot colors may be produced, in one cycle ot the press.

lvly invention more particularly includes the provision oi? overlappine` racks on the links of the side chains olf the endless carriers.` whereby the driving gears will never be disengaged 4troni the racks as the successive links pass the drivi gears. My invention also includes a novel arrangement oli the parts et the inking)` mechanism, whereby the Workin011p rollers for the inking rollers are positively rotated by the movement ot the endless carrier thus tormingg a veryv simple and effective means for working up the ink on the inking; rollers as the inking rollers pass about hallE .vay ot their orbit from the point Where they are engaged by their ductor rollers to the point Where theyY engage their respective printing forms. l y

practical embodiment ot my invention is represented in the accompanying drawings, in which y Fig. 1 represents in top plan so inuch of an offset printing press as Will include my invention.' y

Fig. 2 represents va longitudinal section Fig. 3 represents a transverse vertical section through the inking mechanism taken in the plane of the line lll-lll of Fig. 2, looking in the direction ot the arrows. and

Fig. 4L represents a transverse vertical section through the printing mechanism taken in the plane of the line lll-lV ot lig. 2, looking1 in the direction of the arrows.

The base or' the printing press is denoted by 1, and the side trames which uprise therefrom by 2. A blanket cylinder 3 has its shaft -r mounted in suitable bearings in the side frames 2.

Ther printing forms are denoted by 5 and their cross supports by 6. The endless carrier for the printing forms comprises two side chains7 the links 7 ot which are provided along their inner edges with overlapping racks 8. These side chains are located in close proximity to the side frames 2, and the cross bars 9, Which i'orm the pivots ttor the links of both of the side chains, project outwardly beyond the side chains and are there provided with studs or rollers 10 which are located in and fitted to travel along correspending vertically elongated endless grooves 11 Which form Ways or tracks for the said studs or rollers 10.

A. driving shaft 12 is mounted in suitable bearings in the side trames 2, Which driving; shatt is provided With gears 13 meshing with the overlappingracks 8 ot the side chains of the endless carrier `tor driving thc endless carrier. The driving shaft l?. is located in substantially the same horizontal. plane as the shait t, and the driving gears 13 mesh With the overlapping racks ot the side chains at diametrically opposite points so that each side chain is positively driven at tivo points.

The relative positions oit the parts are such that the printing :terms will be brought successively into rolling contact with the cylinder 3.

I will now proceed to describe the inking mechanism for the printingI forms:

The groups of inking rollers are herein shown as arranged in tivo pairs 14: and 15, each pair having its Working-up rollers 16 and 17 respectively, Which inking and Working-up rollers extend across the machine and are suitably mounted in corresponding links 18 of'an endless carrier comprising two side chains, the inner edges of the linlrs of which arc provided with overlapping racks '1.1).

The cross bars 20, which forni, the pivots for the links of the two side chains and on which the working-up rollers are mounted, project outwardly beyond the side chains and are there provided with studs or 'rollers 2l which are located in and are tted to` travel along corresponding vertically elongated endless grooves 22 -in the side frames. Those cross hars 2O on which the working-up rollers are mounted are provided with pinions 20X which. mesh with endless racks 22", corresponding in contour with the endless grooves 22, for positively driving the working-up rollers as the endless carrier is driven. rr driving shaft 23-.eXtends across the machine and is mounted in suitable bearings in the side frames 2. This cross.` shaft is provided with two: drivinggears 24 which mesh at diametricall-y opposite pointsfwith the overlapping racks 19 for driving the racks at two points. This cross driving shaft 23 is located in substantially the same horizontal plane as the cross drivingshaft 12y and the cross shaft 4.

The relative positions of the parts are such that the groups of inling rollers 14, l5 are brought into rolling contact with/the faces of their respective inking'forms 5, it being understood that the groups of rollers are traveling in the opposite direction from theirforms at the time-of'contact.

In the embodiment shown infthe accompanying drawings, there are four printing forms provided and there are four groups of inking rollers provided, one group of inking rollers for each form.

I have shown four inlr fountains 25 and their fountain rolls 26 which fountain rolls may be driven step by step by any wellknown or approved' means, not shown herein.

I have shown four ductor rollers 27, one for each fountainroll, which ductor rollers are herein shown as moved alternately into and out of contact with their respective groups of inking rollers and their respective fountain rolls byf four cams 28 interconnected bv a train of gears 29. The several inkv fountains may carry ink of One color or they may carry inks of' different colors` according to the use to which the printing press is tol beplaced.

The ductor operating cams 28 are drivenfrom'4 the shaft 23 at the required speed by providing the shaft of` one of the cams with a beveled gear connection 31-L32with sho-rt longitudinal shaft 33 which last named shaft. has a beveled gear connection by providing; the shaftwithv a' gearI 3,6?

which meshes with an idler gear 37 which. in turn meshes with the gear 38 onthe shaft l2. The driving shaft 12` may be driven from .the cylinder shaft 4 by the meshing of the gear 38 with the gear `39 carried by the shaft 4.

From the above description it will be seen that I have provided means whereby a very rapidi printingmay be obtained either' in single or multi-color work, the construction, form and arrangement of the several parts being such that a` continuous interconnected even drive of the several parts is obtained; thelost motion usually incidemt to the drivingI of endless carriers being eliminatedl and the arrangement of the parts being such that a true and even rolling contact isobtained between the inlring rollers andv their forms, and between the forms and their impression surface.

It will alsobe seen that I have provided a very simplel means whereby the press may be changed from a single toi a multi-color press without an undue change in the parts.

It is'evident that various changes may be madein the construction, form and arrangement of the several parts without departing from the spirit and scope of my invention; hence I do not wish to limit myself to the particular embodiment herein shown and .described but,

What I claim is:

l. 4In a printing press, a group of inking rollers, an endless carrier therefor compris.- ing side chains having overlapping racks, a driving shaft having gears meshing with saidVi racks, and means driven from, said shaft for supplying ink to the inking rollers.

`2. In!v a printing press, a plurality of groups of inlring rollers, an endless carrier therefor comprising side chains having overlripping` racks. aI driving shaft having gears meshing with said racks, and means driven from `said shaft for supplying ink to the groups of linking rollers.

3. In a prin-ting press7 a plurality of groups of' inlcing rollers, an endless carrier therefor comprising side chains having overlapping racks, a driving shaft having gears meshing with said racks, and means driven from said shaft for supplying dif ferent colored inks to successive groups-ot hiking rollers.

4. In aprinting press, sii-le frames having corresponding` endless grooves, a' plurality of groups of inlring; rollers, traveling endless carrier therefor coniprisniig side chains having rollers located in said grooves for guiding the carrier, and means for supply ing different colored inks toy successive groups of inhing rollers.

5. In a printingpress, side frames having corresponding endless grooves, a group4 of inlrling rollers, an endless carrier therefor oonnarising side chains having rollers, lo-

is e

ifi/videoacated in said grooves for guiding the carrier and also having overlapping racks, a driving shaft having gears ineshing with said racks, and means driven from said shaft for supplying ink to the inling rollers.

6. In a printing press, side frames having coi-respondng endless grooves, a pluralityT of groups of inlring rollers, an endless carrier therefor comprising side chains having rollers located in said grooves for guiding the carrier and also having overlapping racks, a driving shaft having gears meshing with said racks, and means driven from said shaft for supplying ink to said groups of inling rollers.

7. ln a printingpress, side frames havingcoiresgjnmding endless grooves, a plurality of groups of inling rollers, an endless carrier therefor comprising side chains having rollers loeated in said grooves for guiding the carrier and also having` voverlapping racks, a driving shaft having gears meshing with said racks, and ineans for supplying different colored inks to success Ye groups of inlring rollers.

8. In a printing press, side frames having Corresponding` endless grooves, a group of inling rollers, a traveling` endless carrier therefor comprising side chains having rollers located in said grooves for guiding the carrier, means for supplying inl; to said inl(- ing rollers, and positively rotated Workingup rollers for said inking rollers.

9. In a printing press, an ink fountain, a ductor roller, a group of inlring` rollers, an endless carrier therefor coin arising side chains having overlapping racks, a driving shaft havingl gears meshingwith said racks, and ineans driven from said shaft for periodically n'ioving` the duotor roller into and out of contact with the inling rollers..

l0. In a printingl press, ink fountain, duotor rollers, a plurality of 2grouis of inl;- ing llers, an endless carrier therefor confiprising side Chains having overlapping racks, a driving` shaft having gears meshing with said raolrs, and n'ieans driven from said shaft for periodically moving the duotor rollers into and out of contact with their respective groups of inlring rollers.

il. In a. printing press, side frames having corresponding endless grooves, an ink fountain, a dnetor roller, a group of inhing rollers, a traif'eling endless oarrier therefor comprising side chains havi rollers located in said grooves for guiding the carrier, and nieans for periodically moving the ductor roller into and out of contact with the inlring rollers.

l2. In a printing press, side frames having corresponding endless grooves, inl; fountains, duetor rollers, groups of inking rollers, a traveling` endless carrier therefor comprising side Chains having rollers located in said grooves for guiding the carrier,

and ineens .for periodically moving the ductor rollers into and out of contact with their respective groups of inking rollers.

13. In a printing press, side frames having` corresponding endless grooves, an ink fountain, a ductor roller, a group of inking` rollers, a traveling endless Carrier therefor comprising side chains having rollers in said grooves for guiding the carrier and also having overlappingracks, a driving shaft having` gears meshing with said raelrs, and means driven from said shaft for periodically moving` the ductor roller into and out of Contact with the inicing rollers.

ll. In a iinting press, .side frames having corresponding endless grooves, inl: fountains, ductor rollers, groups of inling rollers, a traveling endless carrier therefor' comprising side chains having rollers in said grooves for guidii'ig the carrier and also having overlapping racks, a drivingl shaft having gears inesl'iing with said racks, and means diven freni said shaft for periodically moving the ductor rollers into and out of Contact With their respective groups of inlring rollers.

15. In a printing` press, a printingforni, an endless carrier therefor ooniprising sido Chains having overlapping racks, and a driving shaft having gears meshing with said asks 16. In a printing` press, a printing forni, an endless carrier therefor eon'iprising` side chains having overlapping racks, a driving` shaft having gears meshing with sai d racks, and means driven from said shaft for applying ink to said pii'inting forni.

1.7. ln a printing press, a plurality of printingv fornis, an endless carrier therefor' comprising side chains having overlapping racks and a driving shaft having gears meshing` with said raelrs.

18. In a printing press, a plurality of printing for-ins, an endless Carrier therefor connjirising side chains having overlapijiing racks, a driving shaft havinggears meshing1 vith said racks, and means driven froin said shaft for applying ink to the printing` forins.

19. In a printing press, a plurality of printing forms, an endless carrier therefor comprising side chains having overlapping racks, a driving shaft having gears .meshing with said racks, and means driven from said shaft for applying different colored inks to successive printing forms.

20. In a printing press, side frames having corresponding endless grooves, a plurality of printing forms, an endless carrier therefor comprising side chains having rollers located in said grooves for guiding the carrier and also having overlapping racks, and a driving shaft having gears meshing with said racks.

2l. In a printing press, side frames having corresponding endless grooves, a plurality oit printing forms, an endless carrier theretor comprising side chains having rollers located in said grooves for guiding the carrier and also having overlapping racks, a driving shaft having gears meshing with said raolrs, and means driven from Said shait for' applying inlr to the printing forms.

22. In a printing press, side frames having corresponding endless grooves, a plurality of printing iorm's, an endless carrier there'lor comprising side Chains having rollers looated in said grooves for guiding the Carrier and also having` overlapping racks, a driving shaft having gears meshing with said raolrs, and means driven lroni said shaft for applying different colored inks to successive printingforins.

23. In a printing press, plurality of printing forms, an endless Carrier therefor! comprising side chains having overlapping racks,` a driving shaft having gears meshingA With said racks, a group of inling rollers, an endless carrier therefor comprising side Chains having overlapping racks, a driving shaft having gears meshing With said racks, and means for supplying ink to the inlring rollers.

24. In a printing press, a plurality of printing` forms, an endless Carrier therefor comprising side Chains having overlapping racks, a driving shaft having gears meshing with saidV racks, ay group of inlring rollers, an endless carrier therefor comprising side chains having overlapping racks, a driving shaft having gears meshing ivith said racks, and means for supplying ink to the inlring rollers, said driving shafts and inl: supplying means being interconnected.

25. In a printing press, a plurality olt groups oit `inlring rollers, an endless Carrier therefor comprising side chains having overlapping racks, a driving shaft liavii'ig gears meshing with said` machs, inlr fountains, their duotor rollers, and a plurality of interoonneetedeams driven from the driving shaft for moving the ductor rollers into and out of Contact with their respective groups of inking rollers.

26. In a printing press, groups of inling rollers, an endless carrier therefor comprising side Chains having overlapping racks, and driving gears meshing with said racks.

27. In a printing press, a plurality of printing forms, an endless carrier therefor Comprising side chains having overlapping racks, and driving gears meshing With said racks.

28. In a printing press, a pluralityof printing forms, groups of inking rollers therefor, endless carriers for the printing forms and the inlr'ing rollers respectively, each of said endless carriers comprising side chains having overlapping racks, and driving gears meshing with said racks.

29. In a printing press, side frames having corresponding endless grooves, a group ot inking rollers, a traveling endless Carrier therefor Comprising side chains having rollers located in said grooves for guiding the carrier, endless racks following the Contour of said grooves and Working-up rollers for said inlring rollers, said Workingup rollers having pinions meshing With said endless raolrs.

30. In a printing press, side iframes having corresponding endless grooves, a plurality of groups of inlring rollers, a traveling endless Carrier therefor comprising side chains having rollers located in said grooves for guiding the Carrier, endless raelrs following the contour of said grooves, and Working-up rollers having pinions meshing With said endless racks.

8i. In a printing press, a blanket cylinder, a plurality of printing-forms arranged to ooaet therewith, an endless carrier for said printing iorms comprising side chains having overlapping racks, driving gears meshing With said racks, and means for applying ink to said printing forms.

32. In a printing press, a blanket oylinder, a plurality of printing forms' arranged to ooaot therewith, an endless Carrier for said printing forms comprising side chains having overlapping racks, driving gears meshing with said racks, and means for applying different colored inks to successive printing forms.

In testimony, that I claim the foregoing as my invention, I have signed my naine this 10th dayV of February 1921.

AUGUST ZVVOBQDA. 

